Chapter 25: Digestive System

Question 1

BD of food

Answer 1

into small molecules to be absorbed into blood/lymph and transport to cells to make ATP

Question 2

Ingestions

Answer 2

putting food into mouth

Question 3

Mechanical processing includes

Answer 3

1) Mastication
2) Segmentation
3) Swallowing
4) Peristalsis

Question 4

MAstication

Answer 4

oral cavity, teeth and tongue

Question 5

Segemtation

Answer 5

• churning and mixing contents

- stomach and intestines

Question 6

Swalloing

Answer 6

tongue, pharynx, esophagus

Question 7

Peristalsis

Answer 7

(smooth muscle) moving food down GI tract

-esophagus, stomach, intestines

Question 8

Chemical digestion

Answer 8

• secretion of chemical and enzymes bd larger particles of food
• salivary glands, stomach, lives, pancreas, SI

Question 9

Secretions

Answer 9

-various: acids, enzymes, buffers

Question 10

Absorption

Answer 10

• molecules into blood stream or lymph

- intestines

Question 11

Excretion

Answer 11

-movement of waste products into GI tract

Question 12

Compaction

Answer 12

• dehydration of waste materials

- Large intestine

Question 13

Defecation

Answer 13

• Elimination of waste

- Rectum and anus

Question 14

Tunics of the Digestive System

Answer 14

1) Tunica mucosa
2) Tunica Submucosa
3) Tunica muscularis
4) Tunica Serosa/Adventitia

Question 15

Tunica Mucosa

Answer 15

• deepest
• Epi w/ exocrine cells, absorptive cells and goblet cells
• lamina propria
• muscularis mucosae

Question 16

Tunica Submucosa

Answer 16

• CT

- submucosal plexus ( intrinsic nerve plexus)

Question 17

Tunica Muscularis

Answer 17

• smooth muscle
• oblique muscle in stomach only
• ciruclar muscle
• longitudinal muscle
• myenteric plexus (intrinsic nerve plexus)

Question 18

Tunica Adventitia

Answer 18

• in Esophagus only

- areolar CT and Fibrous CT binds organs to surrounding tissues

Question 19

Tunica Serosa

Answer 19

• stomach + intestines
• aka Visceral peritoneum = serous membrane
• Mesothelium + CT

Question 20

Oral cavity >

Answer 20

Oropharynx

Question 21

Oropharynx >

Answer 21

Laryngealpharynx

Question 22

Laryngealpharynx>

Answer 22

Esophagus

Question 23

Esophagus>

Answer 23

stomach

Question 24

stomach >

Answer 24

SI

Question 25

SI >

Answer 25

LI

Question 26

LI>

Answer 26

Rectum

Question 27

Rectum>

Answer 27

Anus

Question 28

Accessory organs (TSPLG)

Answer 28

1) Teeth 2) Salivary Glands 3) Pancreas 4) Liver 5) Gall Bladder

Question 29

Parietal Peritoneum

Answer 29

adhering to cavity forming mesenteries

Question 30

Visceral Peritoneum

Answer 30

adhering to organ forming mesenteries

Question 31

Falciform Ligament

Answer 31

- mesentery | - b/w lobes of liver attaching to anterior Ab wall

Question 32

Greater omentum

Answer 32

- mesentry - covers intestines in anterior portion - hangs from stomach

Question 33

Lesser omentum

Answer 33

- mesentery - Liver to stomach - support for stomach

Question 34

Mesentery Proper

Answer 34

-posterior support to small intestines

Question 35

Mesocolon

Answer 35

-posterior suuport to Large intestines